Dual stimuli-responsive microgels based on photolabile crosslinker: Temperature sensitivity and light-induced degradation
作者:Shanshan Bian、Jin Zheng、Wuli Yang
DOI:10.1002/pola.27165
日期:2014.6.15
with increasing NHMA content. Photolytic degradation experiments were investigated by irradiation with UV light, which led to microgel disintegration caused by cleavage of the photolabile crosslinking points. The degradation behavior of the microgels was conducted with respect to degradation rates by means of the relative turbidity changes. Hence, the microgels could totally degrade into short linear polymers
本文介绍了新型光可裂解交联剂的合成和表征。通过乙烯基己内酰胺(VCL)与N沉淀聚合制备双重刺激反应性P (VCL - co- NHMA)微凝胶-羟甲基丙烯酰胺(NHMA)和新的交联剂。如在基于PVCL的颗粒中观察到的,微凝胶具有明显的温度敏感性,并且随着NHMA含量的增加,它们的体积相变温度(VPTT)转变为更高的温度。通过用紫外线照射来研究光降解实验,该光降解实验由于光不稳定的交联点的裂解而导致微凝胶崩解。通过相对的浊度变化相对于降解速率进行了微凝胶的降解行为。因此,微凝胶可被紫外光完全降解成短的线型聚合物,因此具有作为新的光和温度双重响应纳米级材料的巨大潜力。©2014 Wiley Periodicals,Inc. J. Polym。科学,A部分:Polym。化学2014,52,1676-1685